People who sit at a give way/roundabout, they can see you coming and there is nothing else to stop them pulling out so they wait and look and look and wait and wait some more then a little bit more then as you get closer they still wait then once you nice and close THEN they pull out, but not with any degree of acceleration so then you are forced to break and slow down to their 10-15mph pace and they don't make any attempt to use that right pedal for a few miles.
Add into that people who drive everywhere at 35 mph, up your arse or overtaking you in a 30 zone then hold you up in a 40/50mph zone.
People who insist on walking 2, 3 or 4 in a line down a narrow pavement and even when you walk onto the road look at you like you're the arthole.
Think i'm becoming a grumpy old fart at 34